Interlocking metal flashing



May 28, 1929. CHENEY 1,715,000

INTERLOCKING METAL FLASHING Filed NOV. 30, 1927 l i a g i i E I I i l I g i l i i a I I i i g i i i ia i i l I I I i i I! 1 I i I l .i f I 1 E I 5 i i g Patented May 28, 1929.

UNITED STATES rTENT 1,715,000 ries."

ALLAN CHENEY, OF MELROSE, MASSACHUSETTS, ASSIGNOR To THE @HENEY COM- PANY, OF WINCHESTER, MASSACHUSETTS, A. CORPORATION OF MASSAQHUSETTS.

INTERLOCKING METAL FLASHING.

Application filed November This invention relates to improvements in building construction and particularly to an int crlocking metal flashing which may be employed as a waterproof'c it-oif course between courses of masonry. v

The object of the invention is to provide a flashing, preferably constructed of sheet metal and pressed into such a form that when it is interposed between two'courses of masonry in conjunction with the usual layer of mortar, which is employed as a binding agent, that a perfect mechanical bond will be provided in every direction between the flashing and the adjacent courses of masonry.

The invention consists in an improved form of building construction and flashing.

as set forth in the following specifications and particularly as pointed out in the claims thereof.

Referring to the drawings:

Figure 1 represents a plan View of a portion of a strip of flashing embodying my invention.

Fig. 2 represents an edge view of the flashmg.

Fig. 3 is an enlar ed vertical section v through the wall of a uilditngillustrating i more forme my improved flashing inserted between courses of masonry at several locations upon said wall.

Fig. 4 is an enlarged sectional view taken longitudinally of the strip of flashing at a posltion as indicated by the lines 44; of

' Fig. 5 is a plan view illustrating a modified embodiment of my invention.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, referring particularly to Figs. 1 to 4 inclusive, 5 represents a strip of flashing preferably constructed of sheet metal and folded to provide grooves 6 and ridges 7 alternately arranged upon both sides of the strip. The rooves and ridges are furtherwith side walls 8 which are common to both the grooves and the ridges and said walls are inclined to both of the faces of the flashing material in a manner to form dove-tail shaped grooves and ridges. The

0 side walls 8, furthermore, of both grooves and ridges taper longitudinally of said grooves and rid es toward an edge of the material, and preferably, the opposite sides of a groove on one face of the strip tapers in the opposite L 30, 1927. Serial No. 236,725.

the courses of masonry which are located immediately above and below the strip.

In Fig. 3 I have illustrated a conventional form of wall in which strips of flashing embodying my invention are inserted at A, B and C. The wall illustrated in Fig. 3 cmbodies therein a coping 9, a plurality of courses of brick 10, a flashin g blockll and a cornice 12, all of which are joined together in a well-known manner by layers, of mortar 13.

.When utilized at either of'the locations A, B or C the strip of flashing 5 will form a waterproof cut-off course between the course of masonry located thereabove and therebelow, and said strip of flashing will prevent water, which may have found its way between the courses of masonry located thereabove, from seeping downwardlyinto the courses of masonry located therebeneath. Especially will the strip of flashing located at B prevent water from above from seeping downwardly located therebelow and from getting beneath the flashing material 14, WhlCh is provided for the protection of the roof 15.

By providing the alternate ooves 6 and ridges 7 and by tapering sai grooves and ridges as illustrated, it is possible to embed the strip of flashin in the mortar 13 between athe two courses of masonry and provide a perfect bond between the flashing and the mortar. upon each'side thereof and also between the adjacent courses of masonry between which the flashing strip is located.

At certain locations upon the wall, partic ularly at points below the roof, as for ex ample, at C, it is desirable to have the flashing extend upwardly from the layer 'of mortar inwhich it is embedded against the inner surface of the wall, and this is accomplished between the courses of masonry by flattening the opposite ridges of the flashand seeps downwardly to the upper surface thereof, that it will be prevented from working inwardly beyond the flange c and doing damage upon the interior of thebuilding.

In Fig. 5 I have illustrated a modified embodiment of my invention in Which a strip of flashing 16 is folded to form alternately arranged grooves 17 and ridges 18, and as in the'caseof the strip of flashing 5 previously described, side walls 19 of a groove on one face of the strip 16 tapers in the opposite direction to that in which the adjacent groove on the same face of the strip tapers. This strip of flashing may be employed in exactly the same manner as is thestrip 5, with exactly the same result being obtained.

I claim;

1. A flashing comprising a continuous strip of sheet material, embodying therein a plurality of dove-tail shaped grooves and ridges.

the opposite sides of a groove on one face of ,the material tapering longitudinally of the groove in the opposite direction to that in which the opposite sides of another groove on the same face of the material tapers.

2. A building construction comprising superposed courses of masonry, a layer of binding material for said courses, and a section of sheet metal flashing embedded within said binding material, said section embodying therein a plurality of grooves and ridges each having sides inclined to the face of the material and also tapering longitudinally thereof in opposite directions on both sides thereof respective-1y, whereby the masonry is bonded together in all directions.

3. A flashing sheet consisting of a continuous strip of sheet metal'bent to form shallow dovetailed grooves on its opposite sides, the

grooves on each side having their alternate edges parallel and the remaining edges inclined alternately in opposlte' dlrections.

In testimony whereof I have hereunto set my hand,

ALLAN CHENEY. 

